The Green Brick is only found in dungeons, and has a 1/3 chance of being used in the world's dungeon upon world creation. It is one of three varieties of dungeon bricks. If they are mined and placed back, they will no longer be part of the biome, but they will count towards housing.

Notes

Monsters spawn on green bricks at zero or below elevation.

Green bricks are twice as strong as standard bricks, and immune to explosives.